A unit for transferring horticultural products between at least one tank, in which the horticultural products float on a fluid mass, and at least one collection container, including a head provided with a plurality of walls normally arranged vertically. The head is movable between at least one collection position, in which the walls are interposed between respective horticultural products, which float on the fluid mass at a respective predefined section of the tank, and at least one unloading position, in which the walls face and are proximate to the collection container. In an active configuration, the transverse elements protrude transversely from the space occupation of the walls to ensure mechanical interference with the fall of the horticultural products as a consequence of the subsequent lifting of the head and of its transfer toward said unloading position.